Thill-coupling.



PATENTED APR. 18, 1905.

` M. CAHI-LL.

THILL COUPLING.

APPLIOATION FILED 00T. 1. 1904.

UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

THlLL-CQUPLING.

SPECIFICATION forming part of Letters Patent No. 787,661, dated April 18, 1905.

Application filed October 1, 1904. Serial No, 226,741.

To tu whom, it may concern:

Be it known that I, MORTIMER CAHILL, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in rPhill-Couplings, of which the following is a specification.

My invention relates to certain new and useful improvements in thill-couplings; and its object is to produce a device of this class which shall have certain advantages which will appear more fully and at large in the course of this specification.

To this end my invention consists in certain novel features which are shown in the accompanying drawings and described herein.

In the aforesaid drawings, Figure l is a perspective view of my improved thill-coupling, showing the parts assembled. Fig. 2 is' a similar view showing the parts in position and illustrating' the manner in which the parts are pins I), adapted to lie within the hooks formed by the ears a. Behind the ears o is pivoted a block C, bifurcated at its free end, and this block is of such length that when the thilliron is raised at right angles to the plate A, as seen in Fig. 2, the block can be rotated,

its free end swinging just behind the thill,

iron. Vhen the block C is swung to the positionshown in Fig. l, the thill-iron can be swung down, as illustrated, the rear end of the thill-iron passing into the furcation at the front end of the block and contacting therewith, so that a fairly tight t is produced. A block of rubber or other resilient material D is let `into a suitable perforation in the block C in front of the pivot, so that when the thill is down a yielding pressure is exerted upon it, thus preventing rattling.

My device is particulary advantageous because of its cheapness` simplicity, and the ease with which the parts can be separated and reassembled. When it is desired to remove the thill-iron from the plate A, the said thill-iron is swung up to the position shown in Fig. 2, when the block C can be rotated about its pivot. The thill-ironcan then be moved backward until the pins b are free from the ends of the ears a, and the thilliron can be lifted out. When the thill-iron is replaced, the reverse operation is performed, and when the block is swung into place, as shown in Fig. l, its accidental rotation is prevented by engagement with the end of the thill-iron, and the parts cannot be disengaged until the thill-iron is swung up to a position which it could not accidentally occupy. uncouplech and Fig. 3 is a central longitudi- I realize that considerable variation is possible in the details of this construction without departing from the spirit of my invention, and I do not, therefore, intend to limit myself to the specific form herein shown and described.

l claim as new and desire to secure by Letters Patentcombination with an axle-plate, bifurcated at its end to form ears, the said ears being turned up and back .to form hooks, of a thilliron having laterally-projecting pins, adapted to lie within said hooks, a bifurcated block pivoted to the axle-plate and arranged to swing upbehind said pins when the thill is raised and to be locked in position by engagement of the end of the tbill with the furcathe county of Madison and State of Nebraska, tion in the block when the tliill is lowered, this 28th day of September, A. D. 1904.

and a block of resilient material interposed l 1 between said block and its pivot to exert a MORTIMER (JAHILL' 5 yielding pressure upon the tliill-iron. VVitnesSeS:

In Witness whereof I have signed the above GEO. C. LAMBERT,

application for Letters Patent, at Norfolk, in C. C. Gow. 

